1 The Korean War may not be the most famous war in the world. It is often called the "Forgotten War." Still, the conflict in the early 1950s was the source of several "firsts." Some big advances came in the field of aviation.2 WWI saw the first real use of planes in war. It wasn't until WWII, however, that aircraft played a big part in battle. Many of the best stories of WWII are about fighters and bombers. The P-51 Mustang and B-29 were the marvels of their day. They were "prop" craft. Their engines turned propellers that powered the planes.3 In the Korean War, some prop planes were still in use. The old planes bravely took up the battle. P-51s still prowled the skies, giving air support to UN troops. U.S. B-29 bombers took out airfields, supply routes, and dams in the North. The Superfortress was a big help to UN forces.4 It was clear, however, that the rules of the game were changing. Fresh ideas were being put into practice. New planes were taking over. The big news was the jet fighter. This plane was thrust through the sky by the explosion of air from its engines. The power and speed of a jet gave it a big edge over a prop plane.